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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0000920148-08-000093.txt : 20080305
<SEC-HEADER>0000920148-08-000093.hdr.sgml : 20080305
<ACCEPTANCE-DATETIME>20080305165458
ACCESSION NUMBER:		0000920148-08-000093
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080303
FILED AS OF DATE:		20080305
DATE AS OF CHANGE:		20080305

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MAC MAHON THOMAS P
		CENTRAL INDEX KEY:			0001168580

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11353
		FILM NUMBER:		08668440

	BUSINESS ADDRESS:	
		STREET 1:		430 S SPRING STREET
		CITY:			BURLINGTON
		STATE:			NC
		ZIP:			27215

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LABORATORY CORP OF AMERICA HOLDINGS
		CENTRAL INDEX KEY:			0000920148
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MEDICAL LABORATORIES [8071]
		IRS NUMBER:				133757370
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		358 S MAIN ST
		CITY:			BURLINGTON
		STATE:			NC
		ZIP:			27215
		BUSINESS PHONE:		3362291127

	MAIL ADDRESS:	
		STREET 1:		358 S MAIN ST
		CITY:			BURLINGTON
		STATE:			NC
		ZIP:			27215

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NATIONAL HEALTH LABORATORIES HOLDINGS INC
		DATE OF NAME CHANGE:	19940314
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>mac923.xml
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    <footnotes>
        <footnote id="F1">Pursuant to a plan in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934.</footnote>
        <footnote id="F2">Amount shown reflects a 2-for-1 stock split effective on May 10, 2002.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: /s/ BRADFORD T. SMITH, Attorney-in-Fact for Thomas P. Mac Mahon</signatureName>
        <signatureDate>2008-03-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----